:root {
    --bg-dark: #0a0a0b;
    --bg-card: #121214;
    --bg-hover: #1c1c1f;
    --primary: #3b82f6;
    --secondary: #a855f7;
    --accent: #22c55e;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --glow: rgba(59, 130, 246, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.5;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
    0% { box-shadow: 0 0 5px var(--glow); }
    50% { box-shadow: 0 0 20px var(--glow); }
    100% { box-shadow: 0 0 5px var(--glow); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Glassmorphism */
.glass {
    background: rgba(18, 18, 20, 0.7);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 16px;
}

/* Sidebar */
.sidebar {
    width: 260px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-dim);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 8px;
}

.nav-link:hover, .nav-link.active {
    background: var(--bg-hover);
    color: var(--text-main);
    transform: translateX(4px);
}

.nav-link.active {
    border-left: 3px solid var(--primary);
    background: linear-gradient(90deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0) 100%);
}

/* Main Content */
.main-content {
    margin-left: 260px;
    padding: 2rem 3rem;
    min-height: 100vh;
}

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    padding: 1.5rem;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 0.5rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Table Design */
.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
}

.data-table th {
    padding: 1rem;
    text-align: left;
    color: var(--text-dim);
    font-weight: 500;
    font-size: 0.875rem;
}

.data-table tr td {
    padding: 1.25rem 1rem;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.data-table tr td:first-child {
    border-left: 1px solid var(--border);
    border-radius: 12px 0 0 12px;
}

.data-table tr td:last-child {
    border-right: 1px solid var(--border);
    border-radius: 0 12px 12px 0;
}

.data-table tr:hover td {
    background: var(--bg-hover);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
    transform: scale(1.02);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-hover);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dim);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-main);
    transition: border-color 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* Badge */
.badge {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-blue { background: rgba(59, 130, 246, 0.1); color: var(--primary); }
.badge-green { background: rgba(34, 197, 94, 0.1); color: var(--accent); }